CN211339648U - Lepidolite leaching solution purifies edulcoration device - Google Patents

Abstract

The utility model belongs to the technical field of the leachate edulcoration after lithium is carried to the lithium ore, especially, relate to a lepidolite leachate purifies edulcoration device. The to-be-solved technical problem of the utility model is to provide an can carry out effectual getting rid of to element ion such as aluminium, magnesium, manganese, iron, silicon, zinc, nickel in the lepidolite leachate, the degree of depth removes calcium, can also obtain qualified edulcoration liquid after carrying out filtration treatment, accords with the lepidolite leachate purification edulcoration device of preparation battery level lithium carbonate standard. A lepidolite leaching solution purification and impurity removal device comprises a bracket, a reaction kettle, a heat insulation layer and a coarse filter; and a heat-insulating layer surrounds the outside of the reaction kettle, and a cavity is formed between the heat-insulating layer and the reaction kettle. The utility model discloses can carry out effectual getting rid of to the elemental ion such as aluminium, magnesium, manganese, iron, silicon, zinc, nickel in the lepidolite leachate, the degree of depth removes calcium to carry out filtration treatment through the filter, obtain qualified edulcoration liquid.

Description

Lepidolite leaching solution purifies edulcoration device

Technical Field

The utility model belongs to the technical field of the leachate edulcoration after lithium is carried to the lithium ore, especially, relate to a lepidolite leachate purifies edulcoration device.

Background

The lepidolite contains 1.23% -5.90% of lithium oxide and also contains other rare metals such as rubidium, cesium and the like, wherein the largest lepidolite ore in the world is stored in Yichun city, the recoverable amount of the lithium oxide accounts for 31% of the whole country and 8.2% of the world, and the lepidolite is one of the most common lithium minerals, is an important mineral for smelting lithium carbonate and has very important economic and strategic values for comprehensive development and utilization of the lithium carbonate; lithium carbonate is an important basic raw material for the development of new lithium battery energy, and along with the development planning and the departure of the development planning of new national energy, the new lithium battery energy becomes one of energy industries which are key in national support and development; lithium carbonate of lithium batteries is used as an important basic raw material for the development of new energy of lithium batteries, the demand of lithium carbonate is increasingly larger, and the lithium carbonate has increasingly important importance in new energy materials.

Although a great deal of research is carried out on the preparation of lithium carbonate by lepidolite at present, the impurity removal process of the leaching solution generally adopts a traditional chemical purification method and a traditional chemical purification device, the method can generate a great deal of purification slag, a great deal of lithium can be absorbed, wrapped and carried in the purification slag, the lithium in the purification slag can generate a great deal of waste water if being washed by water, the cost can be great if the slag washing water is treated under the condition of high environmental protection requirement, if the slag washing water is not washed, a great deal of lithium can be lost in the purification slag, and the recovery rate is reduced; the traditional impurity removal process has complex and multiple steps, multiple auxiliary material input types and difficult control, and causes high production cost. The impact on the environment is also large. And the equipment investment is large, so the production cost is high, and the benefit of industrial production is not good.

In summary, at present, there is a need to develop a lepidolite leaching solution purification and impurity removal device which can effectively remove ions of elements such as aluminum, magnesium, manganese, iron, silicon, zinc, nickel and the like in the lepidolite leaching solution, deeply remove calcium, and obtain qualified impurity removal liquid after filtration treatment, and meets the standard of preparing battery-grade lithium carbonate, so as to overcome the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome current lepidolite leachate edulcoration device and have the purification sediment in a large number of productions, reduced the rate of recovery, and the easy polluted environment's shortcoming, the to-be-solved technical problem of the utility model is to provide an can carry out effectual getting rid of to the element ion such as aluminium, magnesium, manganese, iron, silicon, zinc, nickel in the lepidolite leachate, the degree of depth removes calcium, can also obtain qualified edulcoration liquid after carrying out filtration treatment, accords with the lepidolite leachate purification edulcoration device who prepares battery level lithium carbonate standard.

The utility model is achieved by the following concrete technical means:

a lepidolite leaching solution purification and impurity removal device comprises a bracket, a reaction kettle, a heat insulation layer and a coarse filter; an insulating layer surrounds the outside of the reaction kettle, and a cavity is formed between the insulating layer and the reaction kettle; a bracket is arranged on the outer side of the bottom of the heat-insulating layer, a steam inlet pipe is arranged on the inner side of the heat-insulating layer, and a steam outlet pipe is arranged at the top of the heat-insulating layer; a motor is arranged in the middle of the top of the reaction kettle, the output end of the motor is pivoted with a stirring rod, and the stirring rod extends to the bottom in the reaction kettle; a leachate inlet and a sodium carbonate solution inlet are formed in one side of the motor at the top of the reaction kettle, and a caustic soda flake inlet and a steam outlet are formed in the other side of the motor; a first discharge pipe is arranged in the middle of the bottom of the reaction kettle, and a first electromagnetic valve is arranged in the first discharge pipe; the tail end of the first discharging pipe is connected with a first communicating pipe, a second electromagnetic valve is arranged inside one end, close to the first discharging pipe, of the first communicating pipe, and the other end of the first communicating pipe is communicated with the coarse filter; a filter plate and filter cloth are arranged in the coarse filter, the filter plate is positioned below the first communicating pipe, and the filter cloth is positioned below the filter plate; a hydraulic rod is arranged in the middle of the top of the coarse filter, and the output end of the hydraulic rod penetrates through the top of the coarse filter and is connected with a pressing plate; and one side of the top of the coarse filter is provided with a water pump, one end of the water pump is communicated with the bottom of the right side wall of the coarse filter through a second discharge pipe, and the other end of the water pump is communicated with the leachate inlet through a second communicating pipe.

Further, one side of the tail end of the first discharge pipe is connected with a first communicating pipe, and the other side of the tail end of the first discharge pipe is connected with a third communicating pipe; a third electromagnetic valve is arranged inside one end of the third communicating pipe close to the first discharge pipe, and the other end of the third communicating pipe is communicated with the precision filter; the inside filter core that is provided with of precision filter, left side wall bottom is provided with the third discharging pipe, and is provided with the fourth solenoid valve in the third discharging pipe.

Further, an exhaust fan is arranged at the top of the reaction kettle and is positioned on one side of the steam outlet.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses can carry out effectual getting rid of to element ion such as aluminium, magnesium, manganese, iron, silicon, zinc, nickel in the lepidolite leachate, the degree of depth removes calcium, can also obtain qualified edulcoration liquid after the filtration treatment through precision filter, accords with preparation battery level lithium carbonate standard, improves the rate of recovery that can lithium height, and the energy consumption is low, reduction in production cost.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

The labels in the figures are: 1-support, 2-reaction kettle, 3-heat insulation layer, 4-steam inlet pipe, 5-steam outlet pipe, 6-motor, 7-stirring rod, 8-first discharge pipe, 9-first electromagnetic valve, 10-leachate inlet, 11-sodium carbonate solution inlet, 12-caustic soda tablet inlet, 13-steam outlet, 14-exhaust fan, 15-first communicating pipe, 16-second electromagnetic valve, 17-coarse filter, 18-hydraulic rod, 19-pressing plate, 20-filtering plate, 21-filtering cloth, 22-second discharge pipe, 23-water pump, 24-second communicating pipe, 25-third communicating pipe, 26-third electromagnetic valve, 27-filter core, 28-precision filter, 29-fourth electromagnetic valve and 30-third discharge pipe.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Examples

A lepidolite leaching solution purification and impurity removal device is shown in figure 1 and comprises a bracket 1, a reaction kettle 2, a heat insulation layer 3 and a coarse filter 17; the heat-insulating layer 3 surrounds the outside of the reaction kettle 2, and a cavity is formed between the heat-insulating layer 3 and the reaction kettle; the outer side of the bottom of the heat-insulating layer 3 is provided with a bracket 1, the inner side is provided with a steam inlet pipe 4, and the top is provided with a steam outlet pipe 5; a motor 6 is arranged in the middle of the top of the reaction kettle 2, the output end of the motor 6 is pivoted with a stirring rod 7, and the stirring rod 7 extends to the bottom in the reaction kettle 2; a leachate inlet 10 and a sodium carbonate solution inlet 11 are formed in one side of a motor 6 at the top of the reaction kettle 2, and a caustic soda flake inlet 12 and a steam outlet 13 are formed in the other side of the motor; a first discharge pipe 8 is arranged in the middle of the bottom of the reaction kettle 2, and a first electromagnetic valve 9 is arranged in the first discharge pipe 8; the tail end of the first discharging pipe 8 is connected with a first communicating pipe 15, a second electromagnetic valve 16 is arranged inside one end, close to the first discharging pipe 8, of the first communicating pipe 15, and the other end of the first communicating pipe is communicated with a coarse filter 17; a filter plate 20 and filter cloth 21 are arranged in the coarse filter 17, the filter plate 20 is positioned below the first communication pipe 15, and the filter cloth 21 is positioned below the filter plate 20; a hydraulic rod 18 is arranged in the middle of the top of the coarse filter 17, and the output end of the hydraulic rod 18 penetrates through the top of the coarse filter 17 and is connected with a pressing plate 19; one side of the top of the coarse filter 17 is provided with a water pump 23, one end of the water pump 23 is communicated with the bottom of the right side wall of the coarse filter 17 through a second discharge pipe 22, and the other end of the water pump 23 is communicated with the leachate inlet 10 through a second communicating pipe 24.

When the lepidolite leaching solution needs to be purified and purified, firstly, the lepidolite leaching solution is injected into a reaction kettle 2 through a leaching solution inlet 10, then, a proper amount of caustic soda flakes are put into the reaction kettle 2 through a caustic soda flake inlet 12, then, high-temperature steam circulates in a cavity between a heat preservation layer 3 and the reaction kettle 2 through the circulation of a steam inlet pipe 4 and a steam outlet pipe 5, the reaction kettle 2 is easily heated, when the internal temperature reaches 50-70 ℃, a motor 6 is started to drive a stirring rod 7 to rotate, the stirring is easy for 30 minutes, then, a sodium carbonate solution is injected into the reaction kettle 2 through a sodium carbonate solution inlet 11, the temperature is controlled to reach 85-95 ℃, the stirring is carried out for 40 minutes, thus, the lepidolite leaching solution can be purified, after the reaction is finished, a first electromagnetic valve 9 and a second electromagnetic valve 16 are opened, so that the solution flows into a coarse filter 17 through a first communicating pipe 15, and then, controlling the reciprocating extension of the hydraulic rod 18 to enable the pressing plate 19 to continuously move up and down to extrude the solution, enabling coarse precipitates in the solution to be left on the filter plate 20, enabling slightly smaller precipitates to be left on the filter cloth 21, after primary coarse filtration, starting the water pump 23, injecting the solution after coarse filtration into the reaction kettle 2 from the leachate inlet 10 through the second discharge pipe 22 and the second communicating pipe 24, controlling the temperature in the reaction kettle 2 to reach 85-95 ℃, adding a complexing precipitator EDTA, stirring and reacting for 30 minutes to further separate impurities in the solution, finally opening the first electromagnetic valve 9 and the third electromagnetic valve 26 again to enable the solution to flow into the precision filter 28 through the third communicating pipe 25, blocking the impurities by the filter element 27, and enabling the qualified impurity-removed solution to flow into a collection part through the third discharge pipe 30. The steam generated in the reaction of the solution in the reaction kettle 2 is discharged through a steam outlet 13 and is pumped out through an exhaust fan 14 for treatment, so that the direct discharge is avoided, and the environment pollution in the atmosphere is avoided.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims (3)

1. A lepidolite leaching liquid purification and impurity removal device is characterized by comprising a support (1), a reaction kettle (2), a heat insulation layer (3) and a coarse filter (17); the heat-insulating layer (3) is arranged around the outside of the reaction kettle (2), and a cavity is formed between the heat-insulating layer (3) and the reaction kettle; a bracket (1) is arranged on the outer side of the bottom of the heat-insulating layer (3), a steam inlet pipe (4) is arranged on the inner side of the heat-insulating layer, and a steam outlet pipe (5) is arranged on the top of the heat-insulating layer; a motor (6) is arranged in the middle of the top of the reaction kettle (2), the output end of the motor (6) is pivoted with a stirring rod (7), and the stirring rod (7) extends to the bottom in the reaction kettle (2); a leachate inlet (10) and a sodium carbonate solution inlet (11) are formed in one side of a motor (6) at the top of the reaction kettle (2), and a caustic soda flake inlet (12) and a steam outlet (13) are formed in the other side of the motor; a first discharge pipe (8) is arranged in the middle of the bottom of the reaction kettle (2), and a first electromagnetic valve (9) is arranged in the first discharge pipe (8); the tail end of the first discharge pipe (8) is connected with a first communication pipe (15), a second electromagnetic valve (16) is arranged inside one end, close to the first discharge pipe (8), of the first communication pipe (15), and the other end of the first communication pipe is communicated with a coarse filter (17); a filter plate (20) and filter cloth (21) are arranged in the coarse filter (17), the filter plate (20) is positioned below the first communication pipe (15), and the filter cloth (21) is positioned below the filter plate (20); a hydraulic rod (18) is arranged in the middle of the top of the coarse filter (17), and the output end of the hydraulic rod (18) penetrates through the top of the coarse filter (17) and is connected with a pressing plate (19); one side of the top of the coarse filter (17) is provided with a water pump (23), one end of the water pump (23) is communicated with the bottom of the right side wall of the coarse filter (17) through a second discharge pipe (22), and the other end of the water pump is communicated with the leachate inlet (10) through a second communicating pipe (24).

2. The lepidolite leaching solution purification and impurity removal device according to claim 1, wherein one side of the tail end of the first discharging pipe (8) is connected with a first communicating pipe (15), and the other side of the tail end of the first discharging pipe is connected with a third communicating pipe (25); a third electromagnetic valve (26) is arranged inside one end, close to the first discharge pipe (8), of the third communicating pipe (25), and the other end of the third communicating pipe is communicated with a precision filter (28); a filter element (27) is arranged in the precision filter (28), a third discharge pipe (30) is arranged at the bottom of the left side wall, and a fourth electromagnetic valve (29) is arranged in the third discharge pipe (30).

3. The lepidolite leaching solution purifying and impurity removing device according to claim 2, wherein an exhaust fan (14) is arranged at the top of the reaction kettle (2), and the exhaust fan (14) is positioned on one side of the steam outlet (13).

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